Post-driving machine



(No Model.) 2 Sheets-Sheet 1. W. B. GRIGSBY.

POST DRIVING MACHINE.

' No. 435,222. Patented Aug.26,1890.

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(No Model.) 2 Sheets-Sheet 2. W. B. GRIGSBY.

POST DRIVING MACHINE. No. 435,222. Patented Aug. 26, 1890.

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UNITED STATES PATENT OFFICE.

VILLIAM B. GRIGSBY, OF OAKTOVN, INDIANA.

POST-DRIVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 435,222, dated August26, 1890.

Application filed March 6, 1890. Serial No. 342,929. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM B. GRIGSBY, a citizen of the United States,and a resident of Oaktown, in the county of Knox and State of Indiana,have invented certain new and useful Improvements in Post-DrivingMachines; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same,

reference being had to the accompanying drawings, and to letters ofreference marked thereon,which form a part of this specification.

This invention relates to a machine adapted to serve as a post-driver;and it consists of the novel construction and combination of parts, aswill appear from the following description and accompanying drawings.

Figure 1 is a perspective View of my improved post-driving machine. Fig.2 is a sectional elevation thereof, and Figs. 3 and 4 are detail viewsof the same.

In the drawings,A refers to a base or horizontal frame, and B to anupright frame, the lower ends of the side pieces of which are providedwith tenons a, which are pivoted in mortises a in the upper edges of theside pieces of frame A. The shoulders a formed by said tenons arerounded to prevent interference with the adjustment of said uprightframe, as presently described. This arrangement permits the adjustmentof the upright frame'B at different inclinations to the base frame, asis necessary in working or driving fence-posts on hillsides, in order tokeep the upright frame in its vertical working position.

Braces G O are connected to the frames A and B, and are renderedadjustable to accommodate the adjustment of the frame B by means ofbolts b engaging the lower ends of said braces and slots 1) in the frameA and bolts 1) engaging the upper ends of the braces and the frame B.

D is ahammer-block arranged between the side pieces of the frame B andhaving studs (1 engaging vertical slots 0 in said side pieces.

D is a cross-head, which has at its ends tenon-like guide projections orextensions (1 also engagingthe slots 0' in the side pieces of the frameB. This cross-head carries grappling-hooks E, which engage anarrow-headed stud e on the hammer-D. The arms e of the hooks E arepivoted in a slot 6 of said crosshead and engage, when the latterreaches the end of its upward movement, the upper ends of the slots of,to effect the disengagement of said hooks from said hammer. This permitsthe hammer to fall and deliver its blow upon the post which it isdesired to drive into the ground. A rope or line F is connected to abail e pivoted to the hammer D, and passes up over a pulley f, hung inthe frame E at its upper end, and thence passes over a pulley upon thehind axle of the vehicle or runninggear, (not shown,) upon which themachine in practice is carried. It is then passed to and wound aroundthe cylinder of the Windlass G, suitably mounted upon the frame A forelevating the hammer D.

Preparatory to driving the posts the supplemental end piece 9, hinged atone end to one sill or side piece of the frame A, is swung outward afterthe disengagement of its latch h from the eye or staple h of theopposite side piece or sill of said frame, which is effected by thewithdrawal of a pin W from said eye or staple. The pin h is held by achain h or other suitable means to the frame A; also, in the meantime,the hammer or block D is temporarily held elevated by a pin (not shown)inserted in an upright of the frame B under said block.

H H are rods passed through the supplemental end piece g and through theopposite end piece of the frame A, which have to be removed before theend piece gcan be swung open. These rods, together with these end piecesof the frame A, provide for holding the post while being driven and keepit plumb.

Upon the sides of the sills or side pieces A are cleats or plates hhaving grooves h to receive the wagon-standards to aid in holding themachine in place upon the wagon, and

through grooves 7 in the side pieces of the upright frame B are insertedbolts or pins, also engaging apertures in said standards for the samepurpose.

i t' are levers pivoted to short pieces or plates 2" i, secured to theside pieces or sills of the frame A and having notches in their upperedges, which are engaged by hooks j j, connected by short chains j j tosaid sills or cylinder 11*, suitably mounted in the side pieces or sillsof the frame A and having connected to it chains l, which are adapted tobe secured to a stump and to a suitable holding or bracing stake when itis desired to use the machine as a stump-puller. This cylinder has uponit, at the outer sides of the sills or side pieces of the frame A,ratchetsrm, which are engaged by holding-pawls m, pivoted to said sidepieces or sills. The cylinder H has also extending through it numeroustransverse passages or sockets n, into any one or more of which isinserted a bar or lever or levers (not shown) for-securing a purchase onsaid cylinder to effect the turning thereof, as required, for instance,in pulling or extracting a stump. To the cylinder of the Windlass G isalso connected a short line or rope I, having attached to its free end adog or clamp I, which is used for stretching wires in constructing orerecting wire fences with the aid of said Windlass.

Having described this invention, what I frame, and the grooved orrecessed cleats or.

plates on said latter frame, substantially as specified.

3. In the post-driving machine, the combination, with the upright framesuitably secured in position and having its side pieces provided withvertical slots, of the sliding cross-head having extensions engagingsaid slots, and grappling-hooks pivoted therein and engaging the upperends of said slots, the hammer-block having arms also engaging saidslots and provided with an arrow-head or bevel-headed stud engaging saidgrappling-hooks, and means for actuating said cross-head andhammer-block, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

XVILLIAM B. GRIGSBY.

Witnesses:

FRANK M. REID, WAYNE EDWARDS.

